antonymous

Synonyms

complementary

of words or propositions so related that each is the negation of the other

contradictory

of words or propositions so related that both cannot be true and both cannot be false

contrary

of words or propositions so related that both cannot be true but both may be false

contrastive, incompatible

of words so related that one contrasts with the other

converse

of words so related that one reverses the relation denoted by the other

Antonyms:

synonymous

(of words) meaning the same or nearly the same

similar

(of words) expressing closely related meanings

substitutable

(of words) interchangeable in a given context without changing the import of the expression

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